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Rough Buttonweed, Poor Joe - Diodia teres


Family: Rubiaceae - Madder family Genus Common Name: Buttonweed Native Status: NativeDicot Annual Perennial Herb
Diodia teres - Rough Buttonweed, Poor Joe. Diodia teres is a wildflower many consider to be a weed. While it can be a creeping plant with reclining stems, in my experience it is more likely to be upright than its equally invasive cousin, Virginia Buttonweed (D. virginiana).

Found in:
AL, AR, AZ, CA, CT, DC, DE, FL, GA, IA, IL, IN, KS, KY, LA, MA, MD, MI, MO, MS, NC, NJ, NM, NY, OH, OK, PA, RI, SC, TN, TX, VA, WI, WV

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Diodia teres

Distribution of Diodia teres in the United States and Canada:
Map unavailable.
Map courtesy of The Biota of North America Program.
Map color key

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Site: Walker County, GA Date: 2010-August-21Photographer: Gerald C. Williamson
Nikon D60
Tamron SP 90MM f/2.8 AF Macro
The flowers of Rough Buttonweed are pink, whereas those of Virginia Buttonweed are white. The leaves are also narrower relative to their length, and the stipules have stiff bristles.
Diodia teres
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Diodia teres initially published on USWildflowers.com 2010-08-21; Updated 2017-02-12

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All content except USDA Plants Database map Copyright Gerald C. Williamson 2024
Photographs Copyright owned by the named photographer



Code Update 20230302